Honeywell Pressuretrol P7810C User Manual

PRODUCT DATA
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
P7810C,D
Pressuretrol
®
Controller
APPLICATION
The P7810 Pressuretrol® Controller is a line voltage pressure
controller that provides automatic operating control, automatic
safety high limit protection, and optional modulating firing rate
control for pressure systems up to 300 psi.
FEATURES
• Use only with steam, air or noncombustible gases that
do not corrode the pressure sensing element.
• Models available with on-off control function, safety
high limit and modulate, and on-off control and safety
high limit functions.
• Models available in 15, 150, and 300 psi maximum
setpoints.
• LED indicators show power and call for heat function
and lockout status.
• Clear cover allows setpoint and differentials to be
read, but not adjusted, without opening cover.
• Manual reset possible without opening cover.
• P7810C contains on/off Control, High Limit and
4 to 20 mA Firing Rate Control.
• P7810D contains on/off Control and High Limit
Control.
Contents
Application........................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Installation ........................................................................... 3
Operation ............................................................................ 4
Checkout and Troubleshooting ............................................ 7
Troubleshooting ................................................................... 8
Service Information ............................................................. 8
65-0235-1

Honeywell Pressuretrol P7810C Specifications

General

Switch Operation	SPDT
Electrical Connections	Screw Terminals
Type	Pressuretrol
Application	Boiler control
Pressure Range	3 to 15 psi
Set Point Adjustment	Adjustable
Maximum Sustained Pressure	150 psi
Approvals	UL, CSA
Connection Size	1/4" NPT
Temperature Range	-30 to 165 F

Summary

Features

Application

Specifications

Ordering Information

Installation

Location Considerations

Proper placement of the controller considering ambient temperature, humidity, and vibration.

Installation Safety and Warnings

Critical safety warnings for electrical shock and installation procedures.

Mounting Options

Wiring

Electrical Hazard and Wiring Rules

Warnings about electrical hazards and compliance with wiring regulations.

Operation

Controller Functions Overview

Explains integral pressure sensors for control, limit, and modulation functions.

Modulation Control Details (P7810C)

Describes the 4 to 20 mA output for modulating firing rate based on pressure.

On/Off Control Operation

LED Display

Checkout

System Checkout Safety and Procedures

Safety warnings and step-by-step procedures for checking controller operation.

Troubleshooting

Service Information

Maintenance and Calibration Guidelines

Information on routine maintenance, inspection, and factory calibration.